Vibrating machine



April 7, 1925. 1,532,843

R. C. STUBBS VIBRATING MACHINE Original Filed June 2, 1922 2Sheets-Sheet l a TUBB&

R. c. STUBBS VIBBATING MACHINE April 7, 1925. r 1,532,843

Original Filed June 2, 1922 2 Sheets-Sheet 2 m 0mm,

FaEented Apr. 7, 1925.

UNITED STATES ROBERT c. s'runns, or DALLAS, TEXAS.

VIBRATING MACHINE.

Application filed June 2, 1922, Serial No. 565,421. Renewed February 11,1925.

To all whom it may concern:

Be it known that I, ROBERT C. STUBBS, a citizen of the United States,residin at Dallas, in the county of Dallas and tate of Texas, haveinvented certain new and useful Improvements in Vibrating Machines, ofwhich the following is a specification.

My invention relates to paving apparatus and more particularly to avibrator for use with the transmitting apparatus shown in -the patentgranted to me on July 5, 1921,

No. 1,383,581; and the object is to'provide obtained to a high degree ofetn'clency by the improved apparatus hereinafter set forth. Other obects and advantages will be fully explained in the following descriptionand the invention will be more particularly ointed out in the claims.

Re erence is had tothe accompanying I drawings which form a part ofthisapplication.

Fig. 1 is a front elevation of the improved vibrator. Fig. 2 is a sideelevation of the same slightly in perspective. Fig. 3 is a perspectiveview of the rear of the machine.

ig. 4 is a perspective view of the frame for the vibrator. ig. 5 is adetail view illustrating the manner of attaching the motor to the frame.Fig. 6 is a side elevation ofone of the flywheels, illustrating themanner of increasing or decreasing the weight on one side ofthefiy-wheel.

Similar characters of reference are used to indicate the same partsthroughout tho several views. I

The improvedvibrator is provided with a motor 1 of approved type to bedriven by liquid or gas fuel. The motor is provided with a tank 2 and amagneto 3 and spark lug 4 and all other equipments for a gaso ine motor.The motor drives 'a main shaft 5 and a fan 6 is driven from the shaft 5by suitable gear wheels and a belt 7 Two flywheels 8 are made rigidwiththe shaft 5.

The motor 1 is hung in a suitable frame by means of laterally projectingflanges or lips 9. The frame consists of two longitudinal side beams ormembers 10 with upright members 11 to which the flanges 9 are boltedrigidly. The members 10 are rigid with each other b reason of across-beam or web member 12 ormed preferably integral with the members10. The frame of the motor is absolutely rigid with the hanger framecomposed of the members 10, 11, and 12.

The object of the frame or hanger frame is to make provision for twosets of rollers. Shafts 13 are mounted on the frame members 10. Rollers14 are mounted on and support the shafts 13. Rollers 14: are between theframe members 10 and rollers 15 are onthe same shafts outside of themembers 10. The rollers 15 perform the same kind of functions performedby the rollers 14. The object of the plurality of rollers is todistribute the force of the vibrations to different stringers of thetransmitting apparatus.

The gasoline motor will create vibrations which will pass through thehanger frame and the rollers 14 and 15. In order to intensify orincrease the force of the vibrations, provision is made for making oneside of each fly-wheel 8 heavier than the other. Weight plugs 16 are'inserted in the rims of the wheels 8. The wheels have been made lighteron one side by making the cavities in the rims for the weights 16. Butthe weight is substantially supplied by the screw or weight plugs. Thereis a plurality of weights in each wheel. The weight of the wheels isunbalanced by removing one or more weights from each wheel. In thismanner the wheels are made heavier on one side than on the other. Thisincreases the force of the vibrations and would make vibrationsindependently of the motor if the wheels were revolved.

The advantage of two sets of rollers is that the front set of rollerswill accomplish the greater partof the work of removing the air andsurplus water from the concrete and the second set will complete thework of direction or course after the first set of.

Air bubbles that are directed.

rollers pass over. The second set of rollers force a continuance ofremoval of the air and surplus water until all the air and surplus waterare eliminated from the mass of concrete.

The fiy-wheels are thus provided with removable weights so that more orless vibration can be obtained by increasing or decreasing theout-of-balance of the wheels. The machine rolls easily whiletransmitting vibrations and pressure through the transmitting unit(consisting of stringers 17 and cleats 18) to the concrete, squeezmg outthe air and excess water with remarkable efliciency. The machine hasbeen thoroughly demonstrated under service conditions and found to behighly eflicient. The perfected machine has reached the present state ofefficiency by numerous experiments with various forms of the vibrator.

The transmitting unit may be varied as the essential'function of thisunit is to transmit the vibrations and pressure to the plastic concretemass and at the same time permit the air and surplus mortar to escapethrough the transmitting unit. The surplus mortar may then be cleanedofi' of the finished concrete. i

What I claim, is,-=

1. A vibrating machine comprising an operating motor and fly-wheelsactuated thereby, a hanger therefor bolted rigidly to said motor, shaftsmounted in said hanger variable means for unbalancing said fiywheels,and rollers mounted on and balancing said shafts for transmitting thevibrations of said machine.

'2. A vibrating machine in combination with a transmitting unitcomprising an operating motor provided with fly wheels actuated thereby,a longitudinal .frame operatively connected with said motor, a

plurality of rollers journaled at each end of said frame for engagingsaid transmitting unit, andmeans insertable into and removable from saidfly wheels. for varying the unbalancing effect of said fly wheels.

3. The combination of a vibrating machine and an elementfor-transmitting the vibrations thereof to a concrete mixture comprisinga motor and a frame therefor, fiy wheels journaled in said frame andactuated-by saidmotor, means insertable into and removable from said flywheels for varying the unbalancing effect of said fly wheels, shaftsjournaled in said frame, and rollers for supporting said shafts andengaging said transmitting element I 4. A vibrating machine comprisingan operating motor provided with a frame having laterally projectingflanges, fly-wheels operated by said motor, a hanger bolted rigidly tosand flanges, front and rear shafts mounted in said hanger, rollersmounted on said shafts, and variable means for unbalancing saidfly-wheels;

5. A vibrating machine comprising an opcrating motor provided with aframe having laterally projecting flanges, fly-wheels operated by saidmotor, a hanger bolted rigidly to said flanges and consisting of twolongitudinal members and ,a web connected to said longitudinal membersfor bracing ROBERT STUBBS;

